<template>
    <div>
         <!-- 面包屑导航 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
       <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
       <el-breadcrumb-item>商品管理</el-breadcrumb-item>
       <el-breadcrumb-item>商品列表</el-breadcrumb-item>
       </el-breadcrumb>

       <!-- card视图 -->
        <el-card>
            <!-- 添加按钮 -->
            <el-row>               
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getGoodsList'>
                    <el-button slot="append" icon="el-icon-search" @click="getGoodsList" ></el-button>
                </el-input>
                    <el-button type="primary" @click="listAdd">添加商品</el-button>                
            </el-row>
            

        <!-- 页面表格 -->
        <el-table :data="goodsList"  style="width: 100%" stripe border>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
            <el-table-column label="创建时间" prop="add_time" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="140px">
                <template slot-scope="scope">
                     <el-button type="primary" size="mini">编辑</el-button>
                     <el-button type="danger" size="mini" @click="deleteListbtn(scope.row.goods_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页功能 -->                                                                       
                                                                                            <!--current-page : 当前页码  -->
        <el-pagination  @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
             :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" 
             :total="total">
        </el-pagination>
      
      
      
      
      
    







        </el-card>
    </div>
</template>


<script>
export default {
    data(){
        return{

            //   查询参数对象   发送 商品列表数据 请求  需要的数据
            queryInfo:{
                query:'',
                // 当前页码
                pagenum:1,
                // 每页显示条数
                pagesize:20
            },

            //   所有商品列表数据
            goodsList:[],
            total:0,


        }
    },

    //  生命周期
    created(){
        this.getGoodsList()

    },


    //  方法
    methods:{
        
        // 根据分页获取所有对应的商品列表
        async getGoodsList(){
            const {data:res} = await this.$http.get('goods',{params:this.queryInfo})
            if(res.meta.status !==200 ) {              
                return this.$message.error('获取商品列表失败！')
            }
            this.goodsList = res.data.goods
            this.total =  res.data.total   
        },


        // 分页 每页显示条数改变时触发
        handleSizeChange(newSiza){
            this.queryInfo.pagesize = newSiza
            this.getGoodsList()
        },


        //  分页 当前的页码值发生变化 触发
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },


        //  页面表格删除事件
        async deleteListbtn(id){
            const deleteData = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
            confirmButtonText: '确定',
             cancelButtonText: '取消',
            type: 'warning'
        }).catch(err=>err)    
            if(deleteData !== 'confirm') return 
            const {data:res} = await this.$http.delete('goods/'+id)
            if(res.meta.status !== 200) {
                return this.$message.error('删除失败！')
            }
            this.$message.success('删除成功！')
            this.getGoodsList()         
        },


        //  添加商品按钮
        listAdd(){
            this.$router.push('/goods/add')
        }


    }
}
</script>


<style lang="less" scoped>
.el-input {
    width: 350px;
    margin-right: 20px;
}
.el-table {
    margin-top: 15px;
}
</style>